On Fri, Jul 2, 2010 at 8:22 AM, Mark Dickinson <dicki...@gmail.com> wrote:
> On Fri, Jul 2, 2010 at 7:55 AM, Craig Citro <craigci...@gmail.com> wrote:
>>
>>>>> dis.dis("raise TypeError()")
>> 0 <114> 26977
>> 3 <115> 8293
>> 6 IMPORT_STAR
>> 7 SETUP_EXCEPT 25968 (to 25978)
>> 10 <69>
>> 11 <114> 28530
>> 14 <114> 10536
>>>>> dis.dis("1 + '1'")
>> 0 <49>
>> 1 SLICE+2
>> 2 STORE_SLICE+3
>> 3 SLICE+2
>> 4 <39>
>> 5 <49>
>> 6 <39>
>
> Whoa. That's very peculiar looking bytecode. Is dis.dis behaving as
> it should here?
Ah. I see. It looks like the string "raise TypeError()" is being
interpreted *directly* as Python bytecode, with no intermediate
compilation. I don't think this is what you intended. Try:
>>> dis.dis(compile("raise TypeError", "", "exec"))
1 0 LOAD_NAME 0 (TypeError)
3 RAISE_VARARGS 1
6 LOAD_CONST 0 (None)
9 RETURN_VALUE
>>> dis.dis(compile("1 + '1'", "", "exec"))
1 0 LOAD_CONST 0 (1)
3 LOAD_CONST 1 ('1')
6 BINARY_ADD
7 POP_TOP
8 LOAD_CONST 2 (None)
11 RETURN_VALUE
Mark
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